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Questions Asked on March 20, 2011

In the figure, a chain consisting of five links, each of mass 0.100 kg, is lifted vertically with constant acceleration of
1. 5 answers
2. asked by Sarah
3. 7,668 views
A 680 newton student runs up a flight of stairs 3.5 m high in 11.4 seconds. The student takese 8.5 seconds to run up the same
1. 2 answers
2. asked by kriti
3. 4,524 views
1) what is the efficiency of a frictionless inclined plane?2) how would you increase the efficiency pf an inclined plane?
1. 3 answers
2. asked by Navroz
3. 3,856 views
if electron are caused to fall through a potential difference of 100000 voltage , determine their final speed if they were
1. 6 answers
2. asked by chandankumar
3. 3,096 views
find an equation of the curve that passes through the point (1,1) and whose slope at (x,y) is y^2/x^3
1. 1 answer
2. asked by linda
3. 3,001 views
A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction
1. 1 answer
2. asked by Sejul
3. 2,472 views
I cannot remember how to figure out this problem. "Ten friends share 3 pizzas equally. What fraction of a whole pizza does each
1. 3 answers
2. asked by Renee
3. 2,222 views
Barium sulfate is listed as insoluble on solubility tables. It does, however, dissolve to a small extent. Its solubility at 50
1. 4 answers
2. asked by Emily
3. 2,141 views
Search: The figure shows three crates being pushed over a concrete floor by a horizontal force of F magnitude 440 N. The
1. 1 answer
2. asked by Sarah
3. 2,077 views
What is the meaning of the simile like a cat in a corn crib
1. 5 answers
2. asked by Anonymous
3. 2,030 views
A car going 50mi/h overtakes and passes another car moving at 45 mi/h. what length of road is required for the operation? assume
1. 2 answers
2. asked by Peter Adrian Ngo
3. 1,968 views
what is probability of getting a multiple f 3 on the spinner
1. 1 answer
2. asked by Anonymous
3. 1,815 views
A uniform solid disk of radius 1.7 m and mass 81.3 kg is free to rotate on a frictionless pivot through a point on its rim.If
1. 1 answer
2. asked by Jennifer
3. 1,587 views
How many grams of lithium will combine with 29.1 g of sulfur to form the compound Li2S?
1. 1 answer
2. asked by Max
3. 1,581 views
Calculate the moles of oxygen gas needed t burn 1.22 moles of ammonia, NH3(g). Find the moles of nitrogen dioxide gas and
1. 1 answer
2. asked by franci
3. 1,568 views
you throw a wad of used paper towards a wastebasket from a height of about 1.3 feet above the floor with an initial vertical
1. 2 answers
2. asked by Bri
3. 1,568 views
What type of figurative language is the following sentence? :Oh, never, if I live to a million, Shall I feel such a terrible
1. 5 answers
2. asked by Michelle
3. 1,508 views
a) If the work function for a certain metal is 1.8 eV, What is the stopping potential for electrons ejected from the metal when
1. 1 answer
2. asked by Vanda
3. 1,495 views
How many grams of potassium chlorate, KClO3(s) must decompose to produce potassium chloride, KCl(s), and 1.45 grams of oxygen
1. 2 answers
2. asked by franci
3. 1,479 views
how do you separate these variables dy/dx=4sqrt(y)lnx/x, y(e)=9
1. 2 answers
2. asked by may
3. 1,441 views
Luke and Leia are trapped inside a trash compactor on the Death Star. The side walls are moving apart at 0.1 m/sec, but the end
1. 1 answer
2. asked by Amanda E.
3. 1,441 views
A ball of mass m = 0.2 kg is attached to a (massless) string of length L = 3 m and is undergoing circular motion in the
1. 2 answers
2. asked by laila
3. 1,377 views
The activation energy for the reaction in which CO2 decomposes to CO and a free radical oxygen atom, O, has activation energy of
1. 3 answers
2. asked by Massiel
3. 1,333 views
Tracy Company, a manufacturer of air conditioners, sold 100 units to Thomas Company on November 26. The units have a list price
1. 0 answers
2. asked by Bobbi Loffredo
3. 1,287 views
The maximum solubility of silver sulfate, Ag2SO4 [molar mass = 312], is 4.50 g/L at 25°C. Silver sulfate dissociates by the
1. 1 answer
2. asked by Paul
3. 1,265 views
an object weighing 15 newtons is lifted from the ground to a height of 0.22 meter. What is the approximate increase in the
1. 0 answers
2. asked by anonymous
3. 1,205 views
How many grams of oxygen gas are required to react completely with 14.6 g of solid sodium to form sodium oxide, Na2O(s)?
1. 1 answer
2. asked by franci
3. 1,193 views
For each expression in column I, choose the expression from column II to complete an identity:Column I Column II 1. -tanxcosx A.
1. 0 answers
2. asked by gin
3. 1,184 views
A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure.(a) What
1. 1 answer
2. asked by HARD!!!!
3. 1,183 views
John's specialty store uses a perpetual inveentory system. the following are some inventory transaction for the month of may
1. 1 answer
2. asked by Bobbi Loffredo
3. 1,179 views
a)A dielectric in the shape of a thick-walled cylinder of outer radius R1 = 5.15 cm, inner radius R2 = 3.65 cm, thickness d =
1. 3 answers
2. asked by cevahir
3. 1,176 views
two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10m/s and the other is at rest. what
1. 1 answer
2. asked by Jenn
3. 1,151 views
How do you insert grouping symbols to make this equation true? 14 divided by (5+2) +8=1014/7=2+8=10 Please confirm, I really
1. 2 answers
2. asked by Jeannie
3. 1,138 views
DRAW a line l construct a line p such that lparallel ro p is at a distance of 3.5cm from l
1. 1 answer
2. asked by pooja
3. 1,130 views
what are some considerations for the development of well-defined health,safety and nutrition practices for an early learning
1. 1 answer
2. asked by mary
3. 1,122 views
Is it possible to study just one atome?why?
1. 1 answer
2. asked by joe
3. 1,112 views
I have removed all your posts (English and English 2) from overnight because of the incredibly objectionable content.Currently,
1. 0 answers
2. asked by Writeacher
3. 1,103 views
ball of mass m = 0.2 kg is attached to a (massless) string of length L = 3 m and is undergoing circular motion in the horizontal
1. 1 answer
2. asked by Anonymous
3. 1,076 views
An airplane has an effective wing surface area of 16 square meter that is generating the lifting force. In level flight the air
1. 1 answer
2. asked by alistair
3. 1,038 views
What happens when you have a mixture of CO2 hydrate and methane hydrate when the temperature is 2.5 C and the pressure is 2 MPa.
1. 0 answers
2. asked by Wale
3. 1,037 views
A dog sits 3.0 m from the center of a merry-go-round. a) If the dog undergoes a 1.2 m/s2 cen- tripetal acceleration, what is the
1. 1 answer
2. asked by maria
3. 1,035 views
another question:the 20 kg block is at the top of a 10 m long inclined plane. The block starts from rest and slides without
1. 2 answers
2. asked by Nabil
3. 1,013 views
a childs observation of a parent writing a grocery list, his recognition of the coca cola logo, and his leafing through mailbox
1. 1 answer
2. asked by tim
3. 999 views
How many grams of solid copper must react with silver nitrate, AgNO3(aq), to produce 5.5 g of solid silver and copper(II)
1. 2 answers
2. asked by franci
3. 981 views
Thank you very much for helping me! Your information was really of help can you say that?)Here is a paragraph I wrote on Dulce
1. 2 answers
2. asked by Mike
3. 973 views
Hello! I am trying to finish a math assignment. it was a bunch of math questions, and I am having a very difficult time with 5
1. 0 answers
2. asked by Josh
3. 960 views
Do you think the last sentence links to intolerance, and do you think this paragraph makes sense?The only figurative device that
1. 3 answers
2. asked by KK
3. 957 views
Calculate the mass in grams of sodium bromide, NaBr, are needed to prepare 250.0 mL of a solution of sodium bromide that is
1. 1 answer
2. asked by allen
3. 940 views
If two cars leave at the same time and are traveling in opposite directions, one car at 50 and the other at 55. How far away
1. 2 answers
2. asked by sam
3. 931 views
One reaction that destroys O3 molecules in the stratosphere is NO + O3  NO2 + O2When this reaction was studied in the
1. 2 answers
2. asked by Massiel
3. 897 views
SamplingA manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500
1. 1 answer
2. asked by Carolina
3. 884 views
Can you please check one more thing:1)The students were delighted by /with their exam results. Are "by" and "with" possible? Is
1. 1 answer
2. asked by Mike
3. 882 views
Consider a conducting spherical shell withinner radius b = 0.862 m and outer radius c = 1.21 m. There is a net charge q2 = 3.82
1. 0 answers
2. asked by Alicia
3. 870 views
A camping lantern uses the reaction of calcium carbide, CaC2(s),and water to produce acetylene gas, C2H2(g), and calcium
1. 1 answer
2. asked by franci
3. 866 views
On July 15,2009, the Nixon Car Company purchased 1,000 tires from the Harwell Company for $50 each. The terms for the sale were
1. 0 answers
2. asked by Bobbi Loffredo
3. 860 views
Water is flowing in a straight horizontal pipe of variable cross section. Where the cross-sectional area of the pipe is
1. 0 answers
2. asked by Megan
3. 849 views
all redox reactions involve1.the gain of electrons only 2.the loss of electrons only 3.both the gain and the loss of electrons
1. 1 answer
2. asked by Alexis
3. 842 views
Find the value of the missing digit that makes the statement true.214,21_ is divisible by 11 Determine whether the statement is
1. 1 answer
2. asked by anonymous
3. 824 views
I need to sketch a graph of the gravitational potential energy (y axis) of a block as a function of its kinetic energy (x axis).
1. 1 answer
2. asked by Nabil
3. 807 views
A driver of a car traveling at 15.9 m/s appliesthe brakes, causing a uniform deceleration of 1.7 m/s2. How long does it take the
1. 1 answer
2. asked by maria
3. 806 views
What is the maximum number of cubes measuring 5cm on an edge that can be obtained by cutting a solid cube that measures 1 m on
1. 1 answer
2. asked by joe
3. 805 views
Determine the points on the curve y=x^2(x^3-x)^2 where the tangent line is horizontal. Thx!
1. 3 answers
2. asked by hast
3. 801 views
A car is driven 110 km west and then 25 km southwest. What is the displacement of the car from the point of origin (magnitude
1. 1 answer
2. asked by Jessica
3. 790 views
Suppose the vertical loop has a radius of 8.92 m. What is the apparent weight (Wap) of a rider on the roller coaster at the
1. 3 answers
2. asked by HELP!
3. 785 views
a=c divided by7b=a multiple of 5 less than 20 c= b divided by 6 d= a x c a = b= c= d=
1. 0 answers
2. asked by lexi
3. 781 views
Calculate the number of moles in these quantities.1. 25.0 g KNO3 2. 5.4 x 102 g (NH4)2C2O4
1. 1 answer
2. asked by Netta
3. 775 views
A staging that weighs Wstaging supports apainter weighing 560 N. The reading on the left scale is 610 N and the reading on the
1. 1 answer
2. asked by maria
3. 758 views
16) A researcher theorized that people can hear better when they have just eaten a large meal. Six individuals were randomly
1. 3 answers
2. asked by Anonymous
3. 751 views
2 trains leave the same train station at the same time, one train travels northeast at 50 mph, the other train travels due west
1. 3 answers
2. asked by Michael
3. 744 views
in a shuffleboard game, the puck slides a total of 12 m before coming to rest. if the coefficient of friction is 0.21, what was
1. 3 answers
2. asked by Harmi
3. 735 views
A negatively charged balloon has 4.6 μC ofcharge. How many excess electrons are on this bal- loon? Answer in units of
1. 1 answer
2. asked by maria
3. 733 views
One of the greatest lasting social changes of the development of mass armies was theA. breakup of aristocracies. B. creation of
1. 1 answer
2. asked by Anonymous
3. 729 views
4. N2+3H2----2Nh3 k=1.2 at a T=375Cyou initially have 0.249mol of N2. 3.21*10^-2mol of H2, and 6.42*10^-4 mol of NH3 in a 3.5L
1. 1 answer
2. asked by shanice
3. 720 views
i need help to write a business report using key terms (explain how internal and external influences may impact on business
1. 2 answers
2. asked by john
3. 718 views
A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction
1. 0 answers
2. asked by Sejul
3. 713 views
tell whether the graph opens upward or downward. then find the axis of symmetry and vertex of the graph of the function1.
1. 1 answer
2. asked by Bri
3. 702 views
After a completely inelastic collision between two objects of equal mass, each having initial speed v, the two move off together
1. 1 answer
2. asked by Haley
3. 696 views
John's Specialty Store uses a periodic inventory system. The following are some inventory transactions for the month of May,
1. 0 answers
2. asked by Bobbi Loffredo
3. 690 views
The natural pH of rainwater is 5.6. The acidity of rainwater is caused by the dissolution of (TRUE OR FALSE)boric acid sulfuric
1. 2 answers
2. asked by Andy
3. 690 views
I need help with finding first and second derivative--simplify your answer.Y=xtan(x) I solved first derivative xsec^2(x) +
1. 2 answers
2. asked by Janet
3. 681 views
The following rearrangement reaction is first order:C3H6 �¨ CH3CH=CH2 The rate constant for this reaction is 6.7 �~ 10−4.
1. 1 answer
2. asked by Alex
3. 681 views
A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure.(a) What
1. 0 answers
2. asked by laila
3. 679 views
Find the GCF of the numbers using an appropriate method.240, 10,000, and 4500 Find the prime factorization of the number, and
1. 1 answer
2. asked by anonymous
3. 669 views
You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the
1. 1 answer
2. asked by HELP!
3. 668 views
Two girls are at the same point on one side of a river that is 40m wide with a current flowing at 1.00m/s. Simultaneously, the
1. 2 answers
2. asked by Mary
3. 664 views
Earthquake activity didn't play a role in the collapse of _______ civilization.A. Mycenaean B. Minoan C. Egyptian D. Harappan
1. 2 answers
2. asked by Anonymous
3. 645 views
A harmonic wave is traveling along a rope.The oscillator that generates the wave com- pletes 44.0 vibrations in 26.9 s. A given
1. 2 answers
2. asked by maria
3. 644 views
A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure.(a) What
1. 0 answers
2. asked by Anonymous
3. 641 views
If Superman is flying at mach 4, 1 km above the ground and yells "Hey! Finish your test!" from directly overhead, what does it
1. 4 answers
2. asked by Gabby
3. 638 views
ok so apparently there's no way to expressintegral |f(x)|dx in standard mathematical functions... which I don't exactly buy...
1. 4 answers
2. asked by Joe
3. 638 views
a balloonist is preparing a trip in a helium balloon. the trip begins in early morning at a temp of 15 degrees Celcius. By mid
1. 0 answers
2. asked by Joan
3. 631 views
What raw materials are used to make lithium ion batteries? How are the raw materials used in the batteries processed? What
1. 1 answer
2. asked by george
3. 629 views
calculate final volume required to reach 1% solution when 0.2g of sample is predigested with nitric acid 3mL then after 1day, if
1. 1 answer
2. asked by tomas
3. 627 views
Do electrons go to the north pole or south pole?
1. 1 answer
2. asked by Anonymous
3. 624 views
two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10m/s and the other is at rest. what
1. 1 answer
2. asked by Jenn
3. 621 views
The following paragraph describes what some may consider to be a typical North American tourist. Itreflects one opinion only.
1. 4 answers
2. asked by anon
3. 619 views
given constant perimeter (people),Irene made a rectangle with an area (tables) of 196 sq. units. she finds that this is the
1. 1 answer
2. asked by lily
3. 618 views
Can you give me a 40 minute lesson plan on themes, patterns and symbols found in literature from different era and cultures? The
1. 1 answer
2. asked by Jewell
3. 617 views
1) I find it difficult to describe activities people normally do when working on the computer (on "Microsoft Word", for
1. 1 answer
2. asked by Mike
3. 617 views
THIS HAS TWO PARTSNaOH(s) was added to 1.0 L of HCl(aq) 0.42 M. 1) Calculate [H3O+] in the solution after the addition of 0.13
1. 2 answers
2. asked by Andy
3. 617 views

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